Grin ding-mill



(No Model.)

' 2 Sheets-Sheet 1. J. M. NICHOLS. GRINDING MILL.

No. 449,229. Patented Mar. 31,1891.

2 Sheets-Sheet 2.

(No Model.)

J. M. NICHOLS.

GRINDING MILL.

Patented Mar. 3l, 18911.

WAM

jUivrrnn STATES Panni* reine.

JESSE M. NICHOLS, OF ANSLEY, NEBRASKA.

GRINDINGnIWILL.

SECIFICATION forming part of Letters Batent No. 449,229, dated March 31, 1891.

Application filed December l2, 1890. Serial No. 374.488. (No model.)

To all whom it may concern.-

Be it known that I, JESSE M. NICHOLS, a citizen of the United States, residing atAnsley', in the county of Custer and State of Nebraska, have invented certain new and useful Improvements in Grinding-Mills; and I do declare the following to be a full, clear, and. exact description of the invention, such as will enable -others skilled in the art to which it appertains to make and use the same, refer-l ence being had to the accompanying drawings, and to the letters and figures `of reference marked thereon, which form a part Of this specification.

This invention relates to mills and mechanism for transmitting motion to the burr and starting and stopping' the same according as the speed of the power-transmitting mechanism exceeds or falls short of the predetermined speed for which the said power-trans mitting mechanism is regulated.

The object of the invention is to provide mill which will be automatic in its action and which will start easily and stop when uthe power falls below the normal, thereby preventing the choking of the burrs.

Another object of the invention is to prevent damage to the burrs in the event of a foreign hard substance coming between them.

The improvements consist in the novel features and the peculiar construction and combination of parts, which will be hereinafter more fully described and claimed, and which are shown in the accompanying drawings, in

ing preferably of metal and of suitable size to support the mill and the power-transmitting and governor mechanism. The walkingbeam B is pivoted between its ends to the top of the standard A', and is weighted at one end to counterbalance the connections, and its other end is connected bypitmen b b with the levers b ZJ", which are mounted on the shaft C, on which is keyed the ratchet-wheel b3 and the gear-wheel D. The levers b h eX- tend in opposite directions and are provided near their movable ends with the pawls b2 b2,

lwhich alternately act on the ratchet-wheel b3 to impart a continuous rotary motion thereto and to the shaft C, in the well-known inanner. The gear-wheel D meshes .with the pinion e on the shaft E, on which is mounted the band-pulley F and the balance-wheel f, the band-pulley being' connected by the endless Vband g with Ythe band-pulley 7L on the shaft H, on the other end of which the spiral ribs e' are formed, and on which the burr J is secured. The end of the shaft H passes through the hopper K, to which is secured the burr L.

The shaft H is provided with the balancewheel h and` the friction-wheel l2, and is adapted to'move endwise'in its hearings to regulate the space between the burrs J and L. The coupling m at the end of the shaft H opposite to the burr J is connected with the lever M by a break-pin m', and the lever M is connected with an arm projected from the frame A by a break-pin m2, the breakpins being preferably of wood. The free end of the lever M is acted on by the setscrew N to move the shaft H in its bearings to regulate the distance between the burrs I and L. The break-pins m and m2 possess a certain amount of elasticity, which facilitates the process or grinding, and in the event of a hard substance coming between the burrs one or the other,or possibly both, of the pins m and m2, will break and permit the burrs to separate a sufficient distance to prevent injury thereto. The shaft O is journaled in the standards at the end of the frame A, and is provided at its end with the feed-wheel P, which is located in the hopper K, and with the friction-wheel o. The slide k is adjustable in the hopper' K to regulate the feed of the grain.

The governor for starting and stopping the feed of the grain s composed of the bracket- 6, which is bolted to the frame A, the vertical shaft 4, having the hevel-wheel 3, which meshes with a corresponding bevel-Wheel 2 on the shaft E, the governor-balls connected with the shaft et and rotated therefrom, the sleeve Q, adapted to slide on the shaft 4t, the

I Jo

rod 7, having a loose connection with the sleeve Q, and threaded at its .lower end, on which are mounted two set-nuts q, the lever 8, pivoted at 9 to the frame A, and having its end held to the rod 7 between the nuts q, and having its other end bent to extend beneath the frame A and thence upward, and provided with the idle-wheel 11, which is adapted to be thrust againstthe frietion-wheels'lZ and o and transmit motion from the shaft H to the shaft O.

In practice the mill isto be operated from any light motive power, preferably by a windmill, which is connected with the walkingbeam B. By regulating the connection between the lever 8 and thev rod 7, which is effected by the nuts q,the governor can be adjusted to throw the feed mechanism in gear.

at any rate of speed of the power-transmitting mechanism. The power transmitting mechanism being set in motion, the shaftH will be rotated bythe instrumentalities hereinbefore described, and'will operate the burrv J and grind the grain. NVhen the required speed has been obtained, `the'wheel. ll vwill be forced against the wheels l2 and o and throw the feed mechanism in gear. IShould the speed fall below that for which the governor is adjusted, the wheel 11 will be withdrawn from contact with the wheels l2 and o and the feed mechanism will be thrown out of gear.

For cracking grain simply, the burr J is removed, and the spiral ribs I, in connection with the hopper, will eifect the desired result.

Having thus described my invention, what I claim to be new, and desire to secure by Letters Patent, is-

`1. The combination, with the mill, mechanism for operating the mill, and the shaft O, having the feed-Wheel I), of a governor in gear with the mill-operating mechanism, the rod 7 on the governor-shaft, and the adj ust- `able lever 8 and its wheel l1, adapted to automatically throw the feed mechanism in and out of gear with the mill-operating mechanism, substantially as described, and for the purpose specified.4

2. The combination, with the mill and the feedmechanism, includingthe friction-wheels 12 and o, of the governor in gear with the mill-operating mechanism, the rod 7, the lever 8, means for adjustably connecting one end of the lever with the rod 7, and the wheel ll on the .other end of the lever and adapted to b'ear against the wheels l2 and o to connect the .feed mechanism with the mill-operating mechanism, substantially as described.

3. -In combination, the hopper, the shaft II, the burrs J and L, the shaft E in gear with the shaft H, having the wheel l2, the shaft O, having the wheel 0 and `the feed-wheel P, the governor' in mesh with the shaft E, the rod 7,

vthe lever 8 adj ustably connected withy the rod 7, and the wheel 11 .on thefree end of the lever 8 and adapted to be brought into contact with the wheels l2 and o, substantially as shown and described, and for the purpose specified.

In testimony whereof I afiixmy signature in presence of two witnesses.

JESSE M. NICHOLS. 

